Retirement properties are frequently subject to service charges; compulsory payments all residents must pay. This could be on a monthly or on an annual payment basis, the money will be used to pay for things like; building maintenance, gardening and landscaping, security and on-site support.
One tip is to make sure to ask about any annual increases and what the service charge has been over the past years so you can see for yourself what the previous increases have been. Another tip is to ask if any part of the service charge is optional. For example, if you are happy to maintain your own garden then you may be able to save some of the cost and instead purchase some new plants for the garden!